Constellation Energyvs.Duke Energy
CEG vs DUK · both in Utilities & power producers, part of the Energy, grid & critical infrastructure value chain: Electricity utilities and large power producers, from nuclear to renewable portfolios.
Constellation Energy and Duke Energy are similar in size by market cap; Duke Energy trades at the lower P/E (18.5 vs 28.5); year to date, Duke Energy leads (+4.1% vs −22.6%).
Side by side
| CEG | DUK | |
|---|---|---|
| Market cap | $98.7B | $96.9B |
| Price | $278.42 | $121.59 |
| Today | +1.8% | −0.3% |
| Return YTD | −22.6% | +4.1% |
| Return 1Y | −11.8% | −1.9% |
| P/E | 28.5 | 18.5 |
| P/S | 3.2 | 2.9 |
| P/B | 3.1 | 1.8 |
Data as of 2026-08-26 · updates daily after U.S. close
The two companies
Constellation EnergyCEG
No US company generates more nuclear power. Its carbon-free baseload increasingly goes to data centre operators on long-term contracts, the clearest case being Microsoft's deal to restart Three Mile Island.
Full CEG profile →Duke EnergyDUK
A large US utility carrying a substantial nuclear fleet into a period of demand growth from electrification and data centres.
Full DUK profile →More CEG & DUK comparisons
Other head-to-heads in the Utilities & power producers segment.